Tag patching machine



Nov. 17, 1931. c. A. FARRAR 1,831,307

TAG PATCHING MACHINE Filed Oct, 29, 1950 Patented Nov. 17, 1931 UNITED STATES PATENT OFFICE CLARENCE A. FARRAR, OF WHITMAN, MASSACHUSETTS, ASSIGNOR TO ANDREW J. FISH,

7 OF BROCKTON, MASSACHUSETTS TAG ra'rcnme :MaoHInE V Application filed October 29, 1930. Serial No, 491,999.

This invention relates to a machine 'or ganizedto cut reinforcing patches from a gummedpatch strip, and press the patches against tags.

g The patches are cutby male and female dies acting within a fixed guide having a slot through which'the gummed strip passes in the path of the male die.

The gum on the patch strip is, necessarily in a soft and tacky'condition during the operation of the machine.

Heretofore in a machine of the character stated the tacky gum through which the male die passes has been allowed to accumulate-on the male die and harden thereon to such an extent that it has" been necessary to frequently remove the guides'and dies fromthe machine for the purpose of cleaning the dies, much time being thus lost. Moreover, accumulations of hardened gum increases the wear of the dies and reduces the term of their operativeness.

The object of my invention is to prevent the accumulation of gum on the dies, the

necessity of stopping the machine for the purpose above stated, and the increased wear of the dies caused by the accumulation of hardened gum thereon.

Of the accompanying drawings forming a part of this specification,-

Figures 1 and 2 are side views of a portion of a tag patching machine in which my invention may be embodied.

Figure 3 is a section on line 33 of Figure 1.

Figure 4 is a section on line H of Figure 1.

Figure 5 shows in perspective the elements A of the die lubricator hereinafter described.

Figure 6 is an enlargement of a portion of Figure. 3 showing portions of two guides, portions of two pairs of dies, and two lubricators.

The same reference characters indicate the I same parts in all of the figures.

A tag patching machine to which my invention relates includes a supporting frame 12, tubular guides 13 fixed to the frame with their bores in alignment with each other, the adjacent ends of the guides being spaced apart and a fixed table 14 projecting between the adjacent ends of the guides on whicha tag 15 is placed to receive the patches.

The guides 13 are provided with slots 16 arranged to guide gummed strips 17 across the bores of the guides. Each guide 13 is provided with a fixed female cutting die 18 adapted to cooperate with a movable male cutting die 19 which is reciprocated in'the bore of the guide by any suitable mechanism adapted to alternately project and retract the male die. When the die is retracted a portion of the bore of each guide forms a space 2O beyond the cutting end of the retracted die, said space being below the cutting end of the upper die as shown, by Figure 3: Said dies have circular cutting edges, the cut tlng edge of the male die being formed by the.

intersection of the circular periphery of the die and a pressingend face at theforward endof the die, said face being adapted to press a detached patch against a tag 15. i

A machine organized as abovebriefly described is well known, and its general organization is not claimed by me, the novel feature of my invention consistingin oil applying means located in the space 20 and adapted to apply a film of oil tothemale die when it is being projected and retracted, and thereby prevent an accumulation of gum on. said die.

A suflicient understanding ofthe invention is afforded by. the following description of the oil applyingmeans associated with the upperfguide, said means being identical in thetwo guidesj I embody said oil'applying means in' a lubricator located in the'space 20," and com-" prising an oil conducting applicator 21 con-- formable to the periphery of the male die, and means for securing said applicator in the bore of the guide in position to apply a film ofoil to the male die when it is being projected and retracted.

The applicator 21 is' an annulus preferably of felt or other suitable compressible absorbent material the internal diameter of the annular applicator being less than the diameter of the male die 19, so that the applicator has wiping contact with a considerable portion of the die when the latter is moved in the applicator.

The means for securing the applicator in its operative position is embodied in rigid clamping rings 22 and 23 engaged with the bore of the guide and bearing on opposite sides of'the applicator, the internal diameter of said "rings being larger than that of the cutting end of the male die so that the' die cannotcontact with the rings. A The upper ring 22 is formed to permit oilto flowthrough it to the applicator, and for this purpose is preferably provided with oil passages 24. When the lubricator is associated with the upper guide 13 oil may be conducted to the l ubricator through a longitudinal groove 25 (Figures- 3 and,4) in 'a carrier 26 to which the-upp'er' die isfixed. I a v hen'thejmale diei'sprojected and enters the "female" die 1'8 some ofthe oil applied to themale die-contacts with the femal'e diean'd prevents an accumulation of gum thereon.

The inner edge of the applicator proj ects inwa-rdly'from the'inner-m'argins ofthe rings 22 and 23, as best "shown by Figure 6, -to a s'uflicient extent "to be compressed by 'the peripheryof the male die when the latter'is rising throughfth'e 'applicato.r, so"that a film of oilisapplied to a portion of saideperipher'y. "When the cutting edge of the-male die risesabove the applicator, the inner edge of the latter springs inwardly and applies a film of 'oi'l'to the'inarginal portion o f'the end face of"th'e ma-l'e die. When the male 'die' descends its cutting edge again compresses the inner edge of the applicator-=which' first wipes oil "upon the 'm'ar'ginal portion of the end face, and then upon a portion of the, periphe ofthe male die.

he 'cl-ainpin'gfrings 22 and 23 preferably have'a tightfriction 'fit'in'an enlargementof shown bythe drawings'and notfhereinbefore described and hereinafter claimed.-

I claim: 1 'Atag-patching machine which includes a fixed tubular guide having means forguiding a'ggum-inedpatch strip, and male and female cutting dies adapted to cut patches from said strip the cutting edge of themale die being formed by the intersection 'ofthe periphery ;and aupressing end faceof the dieythe fe- ,sov

male die being fixed in the guide, and the male die movable and reciprocated therein, the cutting edge of the male die being within the core of the tubular guide when the die is retracted, so that a portion of the die forms a space extending beyond the cutting edgeofthe retracted die, the machine being characterized'by a lubric'a'tor located in said space, adapted to apply oil to portions of the :peripheryandend face of'the male die and prevent-theaccumulation of patch strip gum thereon, said lubricator comprislng an annularapp'licator of compressible absorbent material, and rigid clamping rings fixed in the hereof the guide'a'nd bearing on opposite sides ofthe major portion of the applicator, the internal diameter of said rings being greater thanfthatofthe"cutting edge of the male die, so that said edge'i's adapted to pass through said rings Without contact therewith,

signature.

CLARENCE A. FARRAR.

the internal diameter ofthe applicator belng 

